| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 19 |
16.4%
|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | 1 |
0.9%
|
|
| 2 | 13 |
11.2%
|
|
| 3 | 4 |
3.4%
|
|
| 4 | 22 |
19%
|
|
| 5 | 13 |
11.2%
|
|
| 6 | 8 |
6.9%
|
|
| 7 | 1 |
0.9%
|
|
| 8 | 6 |
5.2%
|
|
| 10 | 1 |
0.9%
|
|
| 12 | 11 |
9.5%
|
|
| 15 | 2 |
1.7%
|
|
| 16 | 1 |
0.9%
|
|
| 20 | 7 |
6%
|
|
| 28 | 2 |
1.7%
|
|
| 32 | 2 |
1.7%
|
|
| 36 | 2 |
1.7%
|
|
| 40 | 1 |
0.9%
|
|
| Sysmiss | 485 |